How can I capture output from LFTP? (Output not written to STDOUT or STDERR?)

Solution 1:

It sounds to me like it's buffering its output. You might try the unbuffer expect script (man page).

Solution 2:

See for the "log:file/xfer" default setting by entering set command in lftp.

Possible output:

set log:file/xfer /home/USERNAME/.local/share/lftp/transfer_log

You can change this in different ways off course.

lftp -c 'open -e "set log:file/xfer /home/USERNAME/myown.log; mget *.csv; bye" -u uname,psswd 172.16.100.101' >> $log

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Solution 3:

Check the xfer domain variables :

set xfer:log 1

set xfer:eta-period 5 # every 5 seconds

set xfer:rate-period 20 # average rate

will put log transfer information into ~/.lftp/transfer_log

Not sure you can change the log file destination nevertheless